EP2259422B1 - Système de démarrage/génération doté d'un disjoncteur polyvalent - Google Patents

Système de démarrage/génération doté d'un disjoncteur polyvalent Download PDF

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Publication number
EP2259422B1
EP2259422B1 EP10164414.4A EP10164414A EP2259422B1 EP 2259422 B1 EP2259422 B1 EP 2259422B1 EP 10164414 A EP10164414 A EP 10164414A EP 2259422 B1 EP2259422 B1 EP 2259422B1
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EP
European Patent Office
Prior art keywords
switching device
starting
link
generating system
current
Prior art date
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Not-in-force
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EP10164414.4A
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German (de)
English (en)
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EP2259422A1 (fr
Inventor
Gregory I. Rozman
Matthew L. Wilhide
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Hamilton Sundstrand Corp
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Hamilton Sundstrand Corp
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Publication of EP2259422A1 publication Critical patent/EP2259422A1/fr
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
    • H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
    • H02P9/302—Brushless excitation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H02P25/024—Synchronous motors controlled by supply frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
    • H02P9/102—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for limiting effects of transients
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters

Definitions

  • the present invention is related generally to electrical power systems, and in particular to starting/generating systems.
  • Starting/generating systems refer to systems capable of operating in either a starting mode in which the system operates as a motor to accelerate a rotor portion to a desired speed or in a generating mode in which the system operates as a generator to convert mechanical energy provided by the rotor portion into electrical energy for distribution to attached loads.
  • a pre-charging or soft-start circuit may be employed to prevent large in-rush currents from damaging a DC link capacitor(s).
  • prior art pre-charge circuits may employ a switching device and resistor (connected in parallel with one another) connected in series on the DC link bus between the power supply and the inverter/rectifier circuit. The switching device is turned OFF in order to force current through the resistor connected in parallel with the switching device, thereby limiting the current provided to the inverter/rectifier circuit and DC link capacitor.
  • this topology does not provide functionality beyond pre-charge operations.
  • the switching device and resistor can be placed in series with the DC link capacitor, which is connected between the DC link buses in parallel with the inverter/rectifier circuit.
  • the switching device is not required to be capable of carrying the full inverter/rectifier current, but the presence of the switching device in series with the capacitor decreases the performance of the DC link capacitor, due to the resistance of the switching device.
  • JP 6284709 discloses a circuit in which a capacitor is connected in parallel with a DC power supply. A switch is connected in series with the power supply. When the switch is closed the capacitor is connected to the power supply and charges rapidly. When the input current exceeds a specified value, the switch is opened for a set time.
  • US 2009/005661 A1 discloses an engine starting system in which a capacitor is used to charge a discharged battery. When the engine is in use, the capacitor is charged by the electrical output of an alternator. The system pre-charges the capacitor by connecting the capacitor and battery via a switch in order to prevent a large inrush current from the battery to the capacitor.
  • JP 04289740 discloses an AC supply connected to a forward converter via a first switch. The output of the forward converter is connected to a reverse converter, which is also connected to a battery via a second switch.
  • both the second switch is closed and the forward converter is operated as a reverse converter and is controlled to reduce deviations between AC signals either side of the first switch.
  • the first switch is only closed when the deviations are close to zero. In-rush currents are thereby prevented from flowing in the line connecting the supply and converter.
  • starting/generating systems employ additional hardware/circuits to implement functions such as battery charging, power flow enablement, and fault protection.
  • additional hardware/circuit components add to the overall cost and weight of starting/generating systems, reduction of which is desirable.
  • a starting/generating system comprises a pre-charge circuit configured to pre-charge a DC link capacitor and limit in-rush currents on a direct current (DC) link that includes a first DC link bus and a second DC link bus.
  • the pre-charge circuit comprises: a switching device connectable in series with the first DC link bus, wherein the switching device operates in either an ON state or an OFF state; and a controller connected to selectively modulate the state of the switching device during a pre-charge cycle to limit in-rush currents on the DC link, wherein the controller is configured to turn the switching device ON to enable power flow from a DC power source to an inverter/rectifier during starting operations, and is configured to turn the switching device OFF to disable power flow from the DC power source to the inverter/rectifier in response to DC voltage provided by the starting/generating system exceeding the DC voltage provided by the DC power source, and is configured to turn the switching device OFF in response to a detected fault condition during generating operations.
  • DC direct current
  • FIG. 1 is a circuit diagram illustrating a starting/generating system according to an embodiment of the present invention.
  • FIG. 1 is a circuit diagram of starting/generating system 10 according to an embodiment of the present invention.
  • System 10 includes rotor portion 12 and stator portion 14.
  • Rotor portion 12 includes motive power shaft 16, main generator portion field winding 18, rotating rectifier 20, three-phase armature windings 22, permanent magnet generator (PMG) magnets 24, and prime mover 26.
  • Stator portion 14 includes filter circuit 28 (which includes capacitor C1, inductor L1, and diode D1), solid state circuit breaker 30, controller 32, DC link buses 34a and 34b (collectively DC link 34), DC link capacitor C2, inverter/rectifier 36, main generator portion armature winding 38, exciter field winding 40, H-bridge 42, three-phase (PMG) stator windings 44, rectifier 46 and control electronics 48.
  • filter circuit 28 which includes capacitor C1, inductor L1, and diode D1
  • solid state circuit breaker 30 controller 32
  • DC link buses 34a and 34b collectively DC link 34
  • DC link capacitor C2 inverter/rect
  • Power source 50 represents a generic power source for providing DC power to starting/generating system 10 during starting operations and DC load 52 represents a generic load that receives power from starting/generating system 10 during generating operations.
  • the embodiment shown in FIG. 1 represents the system employed with respect to a wound field synchronous generator, but would be applicable to other generator systems such as flux regulated permanent magnet generators and other well-known starting/generating systems.
  • DC power source 50 In the starting mode, electrical energy provided by DC power source 50 is converted to alternating current (AC) power by inverter/rectifier 36 (operating as an inverter). Further, the exciter power converter H-bridge 42 delivers AC power to the exciter field winding 40.
  • the exciter acts as a rotary transformer having a primary winding comprising the field winding 40 and secondary windings comprising the armature windings 22 so that AC power is induced in the armature windings 22.
  • the AC power is rectified by the rotating rectifier 20 and applied as DC power to the main generator portion field winding 18.
  • the AC power is provided to main generator portion armature winding 38, which interacts with main generator portion field winding 18 to generate motive force that causes rotor portion 12 to rotate.
  • the rotating field generated by field winding 18 interacts with main generator portion armature winding 38 to generate AC voltage.
  • Inverter/rectifier 36 (operating as a rectifier) converts the AC voltage to DC voltage that is supplied to DC load 52.
  • the DC voltage may be used to charge an attached battery (for example, DC power source 50).
  • the dual functionality of starting/generating system 10 is illustrated visually by switch S1, which indicates that starting/generating system may receive power from DC source 50 (starting mode) and may supply power to a DC load 52 (generating mode).
  • the DC power source i.e., battery
  • the DC power source may also act as a DC load during re-charging of the battery from power generated by starting/generating system 10.
  • Solid-state circuit breaker 30 is connected on DC link bus 34a in series between inverter/rectifier 36 and DC power source 50 (or DC load 52, depending on the mode of operation). Solid-state circuit breaker 30 combines functionality previously provided by a plurality of individual circuits. During pre-charge (i.e., soft-starting) of DC link capacitor C2, the state of solid-state circuit breaker 30 is selectively modulated (i.e., turned ON and OFF) to control in-rush currents. During a starting mode (subsequent to pre-charge), solid-state circuit breaker 30 is selectively controlled to enable power flow from DC power source 50 to inverter/rectifier 36 and to disable power flow from inverter/rectifier 36 to DC power source 50.
  • pre-charge i.e., soft-starting
  • the state of solid-state circuit breaker 30 is selectively modulated (i.e., turned ON and OFF) to control in-rush currents.
  • solid-state circuit breaker 30 is selectively controlled to enable power flow
  • solid-state circuit breaker 30 enables power provided by the generator to be supplied to DC load 52, and is selectively controlled (i.e., turned OFF) in response to fault conditions such as short-circuit conditions, overload conditions, etc., to prevent damage to the generator and/or DC load 52. Also during the generating modes, solid-state circuit breaker 30 is selectively modulated to provide a desired current profile for battery charging operations.
  • Pre-charging (i.e., soft-starting) of DC link capacitor C2 prevents large currents from damaging DC link capacitor C2 during an initial application of power from DC power source 50.
  • Pre-charging functionality is provided by selectively modulating solid-state circuit breaker 30 (i.e., turning it ON and OFF). In-rush current is a function of the voltage applied to the capacitor and the characteristics of the capacitor. By selectively modulating solid-state circuit breaker 30, the voltage applied to DC link capacitor C2 can be controlled, thereby limiting the in-rush current provided to DC link capacitor C2.
  • controller 32 monitors one or more parameters and based on the monitored parameters selectively controls the modulation of solid-state circuit breaker 30.
  • the operation of controller 32 may be closed-loop or open-loop, depending on the application.
  • the duty cycle of solid-state circuit breaker 30 is selectively controlled without feedback regarding the voltage or current provided to DC link capacitor C2.
  • controller 32 may control the duty cycle based on the length of time from application of power from DC power source 50, with the duty cycle increasing based on some function (linearly or non-linearly) until the expiration of the pre-charge cycle.
  • solid-state circuit breaker 30 is turned ON (i.e., maintained in the ON state continuously) such that DC power source 50 supplies power to inverter/rectifier 36 for starting operations.
  • controller 32 monitors one or more parameters and in response selectively controls the modulation (i.e., duty cycle) of solid-state circuit breaker 30.
  • parameters used to determine the modulation of solid-state circuit breaker 30 include the monitored DC link voltage, the monitored DC link capacitor current, and/or the monitored DC link current. Based on these parameters controller 32 can selectively control in-rush currents during pre-charge of DC link capacitor C2. For example, because the in-rush current is dependent on the voltage supplied to DC link capacitor C2, the monitored DC link voltage may be used as feedback to selectively control the in-rush current. Controller 32 monitors the voltage across DC link and in response selectively modulates solid-state circuit breaker 30 to provide the desired pre-charge of capacitor C2.
  • the duty cycle of solid-state circuit breaker 30 is selectively increased until some pre-charge threshold, at which time solid-state circuit breaker is maintained in the ON state (continuously) to provide starting power to inverter/rectifier 36.
  • the monitored DC link current and/or DC link capacitor current can be used as feedback to selectively control the in-rush current.
  • the duty cycle is increased until at the end of the pre-charge cycle solid-state transistor 30 is maintained in the ON state (continuously) to provide starting power to inverter/rectifier 36.
  • Monitoring the in-rush current directly provides feedback regarding the output to be controlled, but requires additional hardware (e.g., current sensors) to implement.
  • Solid-state circuit breaker 30 may also be used to selectively enable power flow during starting operations and may be used to disable power flow in response to the voltage generated by the generator exceeding the voltage provided by DC power source 50 (prior to supplying voltage from the generator to DC load 52). For example, having pre-charged DC link capacitor C2, solid-state circuit breaker 30 is selectively controlled (i.e., turned ON) to enable power flow from DC power source 50 to inverter/rectifier 36 to operate in a starting mode that may include accelerating rotor portion 12, igniting a combustor (for gas turbine engines) and assisting in accelerating the rotor portion 12 to a desired speed following successful ignition.
  • a starting mode may include accelerating rotor portion 12, igniting a combustor (for gas turbine engines) and assisting in accelerating the rotor portion 12 to a desired speed following successful ignition.
  • solid-state circuit breaker 30 is turned OFF to prevent power generated by starting/generating system 10 from flowing into DC power source 50.
  • controller 32 turns solid-state circuit breaker 30 OFF to disable power flow from DC power source to starting/generating system 10 (or vice versa).
  • Circuit breaker 30 may also be employed during the generating mode to provide the desired current profile for optimal battery charging.
  • DC power source 50 may be a battery that requires re-charging after each starting operation.
  • controller 32 monitors the current provided to the battery and selectively modulates solid-state circuit breaker 30 to provide the desired current profile for charging.
  • the current provided to the battery is sensed and provided as feedback to controller 32, although in other embodiments other parameters may be monitored and used in feedback to control the current profile during battery charging operations.
  • Solid-state circuit breaker may also be employed to provide fault protection during the generator mode by selectively disabling power flow from starting/generating system 10 to DC load 52 in response to a detected fault condition.
  • controller 32 may monitor one or more parameters, such as DC link voltage, DC link current and/or DC link capacitor current to detect faults such as short-circuits.
  • controller 32 causes solid-state circuit breaker 30 to turn OFF to prevent excessive currents from being provided to DC load 52.
  • the fault protection provided by solid-state circuit breaker 30 is not activated until a detected fault has existed on the link for a predetermined period of time, to prevent transient conditions from initiating fault protection. Additional parameters well-known in the art for detecting fault conditions may also be monitored by controller 32.
  • other controllers, such as control electronics 48 may provide input to controller 32 regarding detected fault conditions. In response to these inputs, controller 32 selectively activates fault protection by turning OFF solid-state circuit breaker 30.
  • the present invention provides a starting/generating circuit topology in which a solid-state circuit breaker is employed to implement a number of functions required at various stages of starting/generating system operation.
  • the solid-state circuit breaker is connected in series on a DC link bus and is selectively controlled (e.g., turned ON and OFF) to provide the desired functionality.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Claims (12)

  1. Appareil de démarrage/génération comprenant un circuit de pré-charge configuré pour pré-charger un condensateur de connexion CC (courant continu) et limiter le courant d'appel pour usage dans un système de démarrage/génération pour limiter le courant d'appel sur une connexion de courant continu (CC) ayant un premier bus de connexion CC (34A) et un second bus de connexion CC (34B), le circuit de pré-charge comprenant :
    un dispositif de commutation (30) qui peut être connecté en série avec le premier bus de connexion CC, dans lequel le dispositif de commutation fonctionne soit en état de MARCHE soit en état d'ARRET ; et
    un contrôleur (32) connecté pour moduler sélectivement l'état du dispositif de commutation au cours d'un cycle de pré-charge afin de limiter les courants d'appel sur la connexion CC,
    dans lequel le contrôleur (32) est configuré pour mettre le dispositif de commutation sur MARCHE afin de permettre le passage de courant d'une source de courant CC (50) vers un onduleur/redresseur (36) au cours d'opérations de démarrage, et est configuré pour mettre le dispositif de commutation sur ARRET afin de ne pas permettre de passage de courant de la source de courant CC (50) vers l'onduleur/redresseur (36) en réponse à la tension CC fournie par le système de démarrage/génération qui dépasse la tension CC fournie par la source du courant CC, et est configuré pour mettre le dispositif de commutation sur ARRET en réponse à une situation de panne détectée au cours d'opérations de génération.
  2. Système de démarrage/génération selon la revendication 1, dans lequel le dispositif de commutation est un disjoncteur à semiconducteur (30).
  3. Système de démarrage/génération selon la revendication 1 ou la revendication 2, dans lequel le contrôleur (32) emploie une commande à boucle ouverte de la modulation du dispositif de commutation.
  4. Système de démarrage/génération selon la revendication 1 ou la revendication 2, dans lequel le contrôleur (32) surveille un ou plusieurs paramètres choisis dans le groupe constitué par :
    une tension de connexion CC, un courant de connexion CC, un courant de condensateur de connexion CC et leurs combinaisons ; de préférence,
    dans lequel le contrôleur (32) emploie une commande à boucle fermée de la modulation du dispositif de commutation (30) sur la base des un ou plusieurs paramètres surveillés.
  5. Système de démarrage/génération selon la revendication 1, 2, 3 ou 4, dans lequel le contrôleur (32) permet sélectivement le passage de courant sur la connexion CC en mettant le dispositif de commutation sur MARCHE et ne permet pas le passage de courant sur la connexion CC en mettant le dispositif de commutation sur ARRET.
  6. Système de démarrage/génération selon l'une quelconque des revendications précédentes, dans lequel le contrôleur (32) surveille le courant fourni par la connexion CC à une batterie (50) et module sélectivement l'état du dispositif de commutation pour créer un profil de courant souhaité pour charger la batterie.
  7. Système de démarrage/génération selon l'une quelconque des revendications précédentes, dans lequel le contrôleur (32) détecte des situations de panne et met sélectivement le dispositif de commutation sur ARRET pour désactiver le passage de courant sur la connexion CC.
  8. Système de démarrage/génération (10) selon l'une quelconque des revendications précédentes, comprenant :
    une portion de rotor (12) ; et
    une portion de stator (14) située pour interagir avec la portion de rotor et pour connecter à une source de courant CC (50) au cours d'opérations de démarrage et à une charge CC (52) au cours d'opérations de génération, la portion de stator comprenant :
    une connexion CC ayant un premier bus de connexion CC (34A) et un second bus de connexion CC (34B) ;
    un condensateur de connexion CC (C2) connecté entre le premier bus de connexion CC et le second bus de connexion CC ; et
    un onduleur/redresseur (36) connecté pour convertir du courant continu (CC) en courant alternatif (CA) au cours d'opérations de démarrage et pour convertir du courant CA en courant CC au cours d'opérations de génération ;
    le dispositif de commutation (30) étant connecté en série sur le premier bus de connexion CC.
  9. Système de démarrage/génération selon la revendication 8, dans lequel le contrôleur (32) commande sélectivement la modulation du dispositif de commutation sur la base d'au moins un paramètre surveillé choisi dans le groupe constitué par : une tension de connexion CC, un courant de connexion CC, un courant de condensateur de connexion CC et une de leurs combinaisons.
  10. Système de démarrage/génération selon la revendication 8 ou la revendication 9, dans lequel, au cours d'opérations de génération, la portion de stator (14) peut être connectée à une batterie (50) de sorte que le courant CC généré par l'onduleur/redresseur assure le chargement d'énergie de la batterie, dans lequel le contrôleur (32) module l'état du dispositif de commutation au cours du mode de génération pour générer un profil de courant souhaité pour charger la batterie.
  11. Procédé de commande d'un dispositif de commutation (30) connecté en série sur un premier bus de connexion (34A) à courant continu (CC) pour fournir une pluralité de fonctions dans un système de démarrage/génération, le procédé comprenant les étapes consistant à :
    moduler un état du dispositif de commutation pour limiter les courants d'appel au cours de la pré-charge d'un condensateur (C2) connecté entre le premier bus de connexion CC (34A) et un second bus de connexion CC (34B) ;
    mettre le dispositif de commutation sur MARCHE pour permettre le passage de courant vers le système de démarrage/génération au cours d'opérations de démarrage ;
    mettre le dispositif de commutation sur ARRET pour ne pas permettre le passage de courant vers le système de démarrage/génération au cours d'opérations de démarrage ;
    moduler l'état du dispositif de commutation pour générer un profil de courant souhaité de charge de batterie au cours d'opérations de génération ;
    mettre le dispositif de commutation sur MARCHE pour permettre le passage de courant du système de démarrage/génération au cours d'opérations de génération ; et
    mettre le dispositif de commutation sur ARRET pour ne pas permettre le passage de courant du système de démarrage/génération en réponse à une situation de panne détectée.
  12. Procédé selon la revendication 11,
    dans lequel la modulation de l'état du dispositif de commutation (30) pour limiter les courants d'appel comprend les étapes consistant à :
    surveiller au moins l'un des paramètres choisis dans le groupe constitué par : la tension de connexion CC, le courant de connexion CC, le courant de condensateur de connexion CC et leurs combinaisons ; et
    moduler l'état du dispositif de commutation sur la base du paramètre surveillé pour limiter les courants d'appel ; et/ou
    dans lequel la modulation de l'état du dispositif de commutation (30) pour générer un profil de courant souhaité de charge de batterie au cours d'opérations de génération comprend les étapes consistant à :
    surveiller le courant fourni à une batterie connectée ; et
    moduler l'état du dispositif de commutation sur la base du courant surveillé pour générer le profil de courant souhaité de charge de batterie.
EP10164414.4A 2009-06-05 2010-05-30 Système de démarrage/génération doté d'un disjoncteur polyvalent Not-in-force EP2259422B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/479,211 US8299762B2 (en) 2009-06-05 2009-06-05 Starting/generating system with multi-functional circuit breaker

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Publication Number Publication Date
EP2259422A1 EP2259422A1 (fr) 2010-12-08
EP2259422B1 true EP2259422B1 (fr) 2013-04-17

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US8299762B2 (en) * 2009-06-05 2012-10-30 Hamilton Sundstrand Corporation Starting/generating system with multi-functional circuit breaker
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US8519686B2 (en) * 2010-05-19 2013-08-27 Hamilton Sundstrand Corporation SSPC for soft start of DC link capacitor
US8536730B2 (en) * 2010-07-12 2013-09-17 Hamilton Sundstrand Corporation Electric power generating and distribution system comprising a decoupling filter and a solid state power controller
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US8299762B2 (en) 2012-10-30
US8427116B2 (en) 2013-04-23
US20100308582A1 (en) 2010-12-09
US20130033038A1 (en) 2013-02-07

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